LED Post Top Lamps Benefits; LED Post Top pendent bulbs saves energy Longer Lifespan than MH or Other HID Lamps Maintenance-Free for over 5 Years of Operation No Wasted Light: Reduces Light Pollution; “Dark Skies” Initiative-Compatible – Eliminates Light Intrusion into Offices, Residences... Enhances Vision: Better Optical Acuity – Little or No Glare as Compared with High Glare from HID Lamps No Ultraviolet Emission: Does Not Attract Insects Post Top product index web page: http://www.ledtronics.com/products.aspx?page=4#0